https://www.amazon.com/CMS-Magnetics-Magnetic-Levitating-Desk/dp/B01N2Z9QAP
Posts Tagged ‘toys0mg’
Amazon.com: CMS MAGNETICS Magnetic Levitating Desk Toy – Levitation Magnet Demonstrator (1 Piece): Gateway
July 8, 2019(4) Novelty Cool Tubular Groaning Toy Noise Stick – YouTube
June 21, 2019https://www.youtube.com/watch?v=GdNJfbPnlQ8
From Science Museum
“Listen as the plug slides inside the tube — The pitch will rise as the resonant column of air gets shorter and fall as it gets longer. ”
Crookes radiometer – Wikipedia, the free encyclopedia
June 21, 2019QT:{{”
When a radiant energy source is directed at a Crookes radiometer, the radiometer becomes a heat engine.[citation needed] The operation of a heat engine is based on a difference in temperature that is converted to a mechanical output. In this case, the black side of the vane becomes hotter than the other side, as radiant energy from a light source warms the black side by black-body absorption faster than the silver or white side. The internal air molecules are heated up when they touch the black side of the vane.
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